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YB1220
Dual Channel 200mA LDO Regulator
Description
The YB1220 family is a dual-channel LDO product
consisting of 2 independent low noise, low dropout
(LDO), linear regulators especially designed for
battery-powered equipment and portable device.
The regulator achieves a low 300 mV dropout at
200mA 3.3V output and good PSRR of near 50dB
at 1K~10KHz frequency.
The YB1220 consumes only 80uA supply current
with both regulators enabled and supports different
output voltages of full range from 1.2 to 3.6V
(pre-set).
The YB1220 is smartly designed to fit in three
different pin allocations of SOT23-6 package which
offers higher flexibility to users’ PCB layout.
Other features of YB1220 include a thermal
shutdown circuit and an output short-circuit
protection.
Features
High Accuracy Output Voltage : + 2%
Wide Output Voltage Range : 1.2~3.6V
Each Channel Typical Current : 200mA
Max. Allowable 300mA Each Channel
Low Quiescent Current : ~80uA
Dual Enable Pins Control
300mV Dropout at 200mA 3.3V Output
Stable with 1.0uF Ceramic Capacitor
Thermal Protection Shutdown
Output Short-Circuit Current Limit
Built-In Internal Soft-Start
Green Package (RoHS) Available
Applications
Cellular Phone
White LED Backlighting
PDA, Notebook, PC
Digital Camera
Portable Application
Wireless LAN
Battery-Powered Equipment
Typical Application Circuitry
YB1220 MRev.1.1
www.yobon.com.tw
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Pin Configuration
YB1220
Dual Channel 200mA LDO Regulator
Pin Description
Table 1
Pin Name
1 EN1
2 GND
3 EN2
4 VO2
5 VIN
6 VO1
SOT-26M Description
Pull High to Enable Output VO1
Ground Pin
Pull High to Enable Output VO2
Regulated Output Voltage 2
Unregulated Input Supply
Regulated Output Voltage 1
Pin Name
SOT-26T Description
1 EN1 Pull High to Enable Output VO1
2 VIN Unregulated Input Supply
3 EN2 Pull High to Enable Output VO2
4 VO2 Regulated Output Voltage 2
5 GND Ground Pin
6 VO1 Regulated Output Voltage 1
Pin Name
SOT-26R Description
1 VO1 Regulated Output Voltage 1
2 GND Ground Pin
3 EN1 Pull High to Enable Output VO1
4 EN2 Pull High to Enable Output VO2
5 VIN Unregulated Input Supply
6 VO2 Regulated Output Voltage 2
YB1220 MRev.1.1
www.yobon.com.tw
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Ordering Information
YB1220
Dual Channel 200mA LDO Regulator
Marking Information
Absolute Maximum Ratings
Supply Voltage ................................................ -0.3V to 7.0V
Output Voltage ....................................... -0.3V to (VIN+0.3V)
Output Short-Circuit Duration.....................................Infinite
Junction Temperature Range ...................................+150
Storage Temperature Range..................... -65to +150
Lead Temperature ....................................................+250
Recommended Operating Conditions
Input Supply Voltage........................ 2V to 6.0V
Operating Temperature ..............-40to +85
ESD Susceptibility (HBM)...........................................2KV
ESD Susceptibility (MM)........................................... 200V
Thermal Resistance (SOT-26, θJC) ....................140/W
Thermal Resistance (SOT-26, θJA) ....................250/W
Internal Power Dissipation (SOT-26, PD).................. 0.4W
YB1220 MRev.1.1
www.yobon.com.tw
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YB1220
Dual Channel 200mA LDO Regulator
Electrical Characteristics
Table 2
TA = 25, VIN= Max(VO1,VO2) + 1 V , CIN = COU T1= Cout2=1.0μF, EN = VIN, unless otherwise noted
Function Parameter
Input Voltage Range
Output Voltage
Output Voltage Accuracy
Output Current Limit
Dropout Voltage (Note 1)
Ground Current
Line Regulation
Load Regulation
Shutdown Supply Current
Ripple Rejection (PSRR)
EN Logic Low Level
EN Logic High Level
EN Input Bias Current
Thermal Shutdown
Thermal Hysteresis
Conditions
Predefined
IOUT = 10mA, VO >= 1.3V
IOUT = 10mA, VO = 1.2V
Short-Circuit Output Limit
VOUT = 3.3V, IOUT = 200mA
VOUT = 2.8V, IOUT = 200mA
VOUT = 2.5V, IOUT = 200mA
VOUT = 1.8V, IOUT = 200mA
VOUT = 1.2V, IOUT = 200mA
Iout = 0mA
VIN = Max(VO1,VO2)+1V to 6V,
Iout =10mA
Iout = 1mA to 200mA
EN1 = EN2 = 0V
F = 1KHz, Iout = 1mA
F = 10KHz, Iout = 1mA
F = 100KHz, Iout = 1mA
VIN = 2.0V to 6V
VIN = 2.0V to 6V
VIN = EN = 6V
Shutdown Temperature
Min Typ Max Units
2.0 6.0 V
1.2 3.6 V
-2.0 +2.0 %
0 +4.0 %
80
300
380
420
550
800
80
0.4
1.0
~0.01
62
50
34
0.4
1.5
0.01
160
20
mA
mV
μA
%/V
%
μA
dB
dB
dB
V
V
μA
Note 1 : The drop out voltage varies depending on output voltage selection
Dropout is defined as VIN–VO when VO is 100mV below VO where VIN=Max(VO1,VO2) for nominal VO.
Note 2: Time needed for VOUT to reach 90% of final value.
YB1220 MRev.1.1
www.yobon.com.tw
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YB1220
Dual Channel 200mA LDO Regulator
Typical Characteristics
At TA=25, VIN=Max(VO1,VO2) +1V, CIN=COUT=1.0μF, EN=VIN, unless otherwise noted.
YB1220 MRev.1.1
www.yobon.com.tw
5